we are going to deploy Symmetricom's SyncServer S200 in our network, and I have a few questions:
1. for other routers/switches need to request the time from S200, I just use command "ntp server x.x.x.x", in which x.x.x.x is the IP of the S200, right?
2. It looks that I don't need to configure "NTP master" command on the router, because routers need to get the time from external source, what is the conqusence if I configure "NTP master 2" on the router?
3. For high availablity, do we need to buy 1 more S200 servers and on the routers, configure:"ntp server x.x.x.x prefer" and "ntp server y.y.y.y", in which y.y.y.y is the IP of the second S200, so that x.x.x.x is the primary NTP server, and y.y.y.y is the second NTP server?
4. what if the time is different on x.x.x.x and y.y.y.y? which one we should trust? or we need to buy 1 more S200 to prevent this situation happen?